use previews more consistently

configs/voctocore-cam1.ini

@@ -42,7 +42,7 @@ live=true
 videodecoder=vaapi
 videoencoder=vaapi
 videocodec=h264
-videocaps=video/x-h264,width=1024,height=576,framerate=30/1
+videocaps=video/x-h264,width=960,height=540,framerate=30/1
 sources=cam1,slides
 
 [blinder]
@@ -67,7 +67,7 @@ blend-time=300
 [mirrors]
 ; disable if not needed
 enabled = true
-;sources=cam1,slides
+sources = mix,mix-blinded
 
 [composites]
 ; fullscreen source A (B is full transparent)

configs/voctocore-cam2.ini

@@ -50,8 +50,8 @@ live=true
 videodecoder=vaapi
 videoencoder=vaapi
 videocodec=h264
-videocaps=video/x-h264,width=1024,height=576,framerate=30/1
-sources=cam1,cam2,slides
+videocaps=video/x-h264,width=960,height=540,framerate=30/1
+sources=cam1,cam2,slides,mix,mix-blinded
 
 [blinder]
 enabled=true
@@ -75,7 +75,7 @@ blend-time=300
 [mirrors]
 ; disable if not needed
 enabled = true
-;sources=cam1,cam2,slides
+sources = mix,mix-blinded
 
 [composites]
 ; fullscreen source A (B is full transparent)